| American Christian Military Academy | 3.1 |
Regular elementary or secondary | 5-12 | 47 | 9.6 | Christian (no specific denomination) |
| Odell Young Alternative School | 3.6 |
Special education | 2-11 | 35 | 7.0 | Nonsectarian |
| Temple Learning Center | 3.8 |
Regular elementary or secondary | Pre-KG-12 | 31 | 10.3 | Christian (no specific denomination) |
| Eagle Valley School | 4.0 |
Special education | 5-12 | 48 | 12.0 | Nonsectarian |
| Mountainside Private School | 6.9 |
Regular elementary or secondary | 3-12 | 12 | 9.2 | Nonsectarian |
| Altus Academy Rialto | 7.6 |
Special education | KG-12 | 57 | 11.4 | Nonsectarian |
| Lighthouse Christian Academy | 7.7 |
Regular elementary or secondary | KG-12 | 85 | 9.7 | Pentecostal |
| Abc Hope For Kids | 8.1 |
Special education | Pre-KG-12 | 28 | 9.3 | Nonsectarian |
| Bloomington Christian School | 8.1 |
Regular elementary or secondary | Pre-KG-12 | 903 | 14.8 | Church of the Nazarene |
| Loma Linda Academy | 8.4 |
Regular elementary or secondary | KG-12 | 1572 | 17.0 | Seventh-Day Adventist |
| Packinghouse Christian Academy | 8.5 |
Regular elementary or secondary | KG-12 | 293 | 14.0 | Christian (no specific denomination) |
| Benchmark Young Adult School | 9.3 |
Alternative/other | Ungraded-Ungraded | 50 | 12.5 | Nonsectarian |
| Montessori In Redlands Inc | 10.0 |
Montessori | Pre-KG-9 | 164 | 9.7 | Nonsectarian |
| Lake Arrowhead Christian School | 10.4 |
Regular elementary or secondary | KG-12 | 118 | 12.6 | Christian (no specific denomination) |
| Redlands Adventist Academy | 10.5 |
Regular elementary or secondary | KG-12 | 493 | 14.5 | Seventh-Day Adventist |
| Immanuel Baptist School | 10.8 |
Alternative/other | Pre-KG-12 | 66 | 13.8 | Baptist |
| Big Springs Center & School | 12.1 |
Special education | Ungraded-Ungraded | 15 | 1.9 | Nonsectarian |
| Kings Chapel Christian Academy | 15.8 |
Alternative/other | 3-12 | 16 | 8.0 | Christian (no specific denomination) |
| Mountain View School | 16.5 |
Alternative/other | 6-10 | 43 | 10.8 | Nonsectarian |
| Cornerstone Fellowship Academy | 16.8 |
Regular elementary or secondary | 1-10 | 16 | 1.8 | Christian (no specific denomination) |
| Hesperia Christian School | 16.8 |
Regular elementary or secondary | Pre-KG-12 | 483 | 15.9 | Christian (no specific denomination) |
| Calvary Chapel Christian School | 17.3 |
Regular elementary or secondary | KG-12 | 555 | 15.7 | Christian (no specific denomination) |
| Live Oak School | 18.3 |
Special education | 6-12 | 45 | 9.0 | Nonsectarian |
| San Antonio Christian School | 18.4 |
Regular elementary or secondary | KG-10 | 89 | 14.6 | Seventh-Day Adventist |
| Riverside Christian Schools | 18.6 |
Regular elementary or secondary | Pre-KG-12 | 921 | 19.3 | Christian (no specific denomination) |
| Montecito Baptist School | 19.2 |
Regular elementary or secondary | KG-12 | 98 | 11.5 | Baptist |
| Uhs Schools, Riverside Formerly Known As Keystone | 19.5 |
Special education | Ungraded-Ungraded | 185 | 10.3 | Nonsectarian |
| Gospel Restoration Academy | 19.7 |
Regular elementary or secondary | Pre-KG-12 | 18 | 3.0 | Church of God |
| Woodcrest Christian School System | 20.0 |
Regular elementary or secondary | KG-12 | 1104 | 21.2 | Christian (no specific denomination) |
| Marywood-palm Valley School | 20.1 |
Regular elementary or secondary | Pre-KG-12 | 415 | 8.4 | Nonsectarian |
| Mesa Grande Academy | 20.2 |
Regular elementary or secondary | KG-12 | 306 | 13.3 | Seventh-Day Adventist |
| The Gate Christian School | 20.4 |
Regular elementary or secondary | 1-12 | 42 | 1.8 | Christian (no specific denomination) |
| Upland Christian Schools | 20.4 |
Regular elementary or secondary | KG-12 | 607 | 15.2 | Church of the Nazarene |
| Somerset Educational Services | 20.4 |
Special education | KG-12 | 216 | 12.0 | Nonsectarian |
| La Sierra Academy | 20.7 |
Regular elementary or secondary | KG-12 | 819 | 20.5 | Seventh-Day Adventist |
| Valley Christian Schools | 21.0 |
Regular elementary or secondary | Pre-KG-9 | 14 | 3.6 | Christian (no specific denomination) |
| Victor Valley Christian Schools | 21.5 |
Regular elementary or secondary | Pre-KG-12 | 446 | 17.1 | Assembly of God |
| Apple Valley Christian School | 22.9 |
Special program emphasis | KG-12 | 234 | 15.8 | Baptist |
| Cherry Valley Brethren Schools | 23.6 |
Regular elementary or secondary | KG-12 | 56 | 14.0 | Brethren |
| Oxford Preparatory | 23.8 |
Regular elementary or secondary | 2-11 | 7 | 7.0 | Nonsectarian |
| Apple Valley Private School And Learning Center | 24.0 |
Regular elementary or secondary | KG-10 | 20 | 10.0 | Nonsectarian |
| Oak Grove At The Ranch | 24.0 |
Special education | 3-12 | 39 | 6.5 | Nonsectarian |
